Sorry about that, I'm kinda dopey at 2am lol, so basically you want me to design you an interface skin but having the black area as what you asked. I'll add in an extra 300 pixels on the width and height for the skin.
I normally VM them to people when I've done them, but if you want to keep it secret for whatever reason, I'll PM it. I might be able to get to it tomorrow, but no promises.